Related Party Transactions (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Related Party Transaction [Line Items]
Other expenses	$ 18,222	$ 15,340
Affiliated Entity
Related Party Transaction [Line Items]
Other expenses	$ 7,700	$ 5,500

Generally recurring costs associated with normal operations except for the portion of these expenses which can be clearly related to production and included in cost of sales or services. Includes selling, general and administrative expense.

No definition available.

Name:	us-gaap_OperatingExpenses
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration